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The Big Bang and Evolution

shawn001

shawn001

Well-Known Member
ChristineM said:
As far as we know. What conditions existed before the bb are unknown, there is nothing in science to describe before the bb. The laws upon which physics is formed did not coalesce until after the event so it is logically possible but highly improbable.
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Yes, we have not been able to go back in Planck time all the way and what caused the bang are only speculations.

Some of the speculations.

http://gizmodo.com/what-was-our-universe-like-before-the-big-bang-1791889926
 
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omega2xx

Well-Known Member
shawn001 said:
First, again there is no such thing as "Nothing" in physics, this is very important! Even if you close your eye's and try to picture "nothing" you can't.
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That doesn't answer my question: is matter, energy and life eternal?

You cannot create or destroy energy. You can't add energy to the universe or destroy it, it just changes. Although not looking good for the end of the universe at this time.
Click to expand...

As far as we know today.

Virtual particles, not vertical ones can't be seen, but they exist in the vacuum of empty space. This bears out in QM experiments.
Click to expand...

That is still just a theory.

"
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Are virtual particles really constantly popping in and out of existence? Or are they merely a mathematical bookkeeping device for quantum mechanics?

"Gordon Kane, director of the Michigan Center for Theoretical Physics at the University of Michigan at Ann Arbor, provides this answer.

Virtual particles are indeed real particles. Quantum theory predicts that every particle spends some time as a combination of other particles in all possible ways. These predictions are very well understood and tested.

Quantum mechanics allows and indeed requires, temporary violations of conservation of energy, so one particle can become a pair of heavier particles (the so-called virtual particles), which quickly rejoin into the original particle as if they had never been there. If that were all that occurred we would still be confident that it was a real effect because it is an intrinsic part of quantum mechanics, which is extremely well tested, and is a complete and tightly woven theory--if any part of it were wrong the whole structure would collapse...

"Thus virtual particles are indeed real and have observable effects that physicists have devised ways of measuring. Their properties and consequences are well established and well understood consequences of quantum mechanics."

Are virtual particles really constantly popping in and out of existence? Or are they merely a mathematical bookkeeping device for quantum mechanics?

"The Casimir effect is a small attractive force that acts between two close parallel uncharged conducting plates. It is due to quantum vacuum fluctuations of the electromagnetic field. The effect was predicted by the Dutch physicist Hendrick Casimir in 1948."

What is the Casimir effect?

"
One of the most interesting aspects of vacuum energy (with or without mirrors) is that calculated in quantum field theory, it is infinite! To some, this finding implies that the vacuum of space could be an enormous source of energy--called "zero point energy."
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What is the Casimir effect?

How can you explain zero-point energy to a non-physicist?

"Now, when non-physicists think of a vacuum they usually think of "empty space", without any particles. However, the fields are always there, even when they're not excited to a higher energy state to create a particle. So a vacuum without any particles still has fields, they are simply not excited."

When fields are not in an excited energy state, they are in a state of lowest energy. This state is the only state in which there are no particles and is also known as the ground state.

However, this is a state of lowest energy, it's not a state of no energy. There is some amount of energy that the field always has, even when it is in the ground state. This energy is called the vacuum energy or "zero-point energy".

In short: A vacuum is not really empty; even if there are no particles, there are still fields. The vacuum energy is simply the energy that fields have when they are in the vacuum ("no particle") state.

https://www.quora.com/How-can-you-explain-zero-point-energy-to-a-non-physicist


As far as life is eternal, life in the universe could be, but I think you're talking about life and people's own consciousness and that may or may not be how it works, right now that doesn't seem to be the case and no science points to it being that way. If you have any that does that is science based, I would like to see it.[/QUOTE]

When something is called a theory it is because it has not yet been proven.

"To the average person it might seem obvious that nothing can happen in nothing. But to a quantum physicist, nothing is, in fact something. " Brad Lemley
 
shawn001

shawn001

Well-Known Member
omega2xx said:
That doesn't answer my question: is matter, energy and life eternal?

Matter and Energy E=mc#

We're made of matter and energy, but we are also bound by the law below as well as Entropy. I did answer your question on the post you asked about it.



As far as we know today.

This is a law of physics.
"The law of conservation of energy, also known as the first law of thermodynamics, states that the energy of a closed system must remain constant—it can neither increase nor decrease without interference from outside. The universe itself is a closed system, so the total amount of energy in existence has always been the same. The forms that energy takes, however, are constantly changing.

Fact or Fiction?: Energy Can Neither Be Created Nor Destroyed

IF you can break a physical law, please let me know right away.

That is still just a theory.

One of the strongest scientific theories in all of the sciences! Quantum mechanics. Its also a fact they exist, its already been more then proven.





What is the Casimir effect?

How can you explain zero-point energy to a non-physicist?

"Now, when non-physicists think of a vacuum they usually think of "empty space", without any particles. However, the fields are always there, even when they're not excited to a higher energy state to create a particle. So a vacuum without any particles still has fields, they are simply not excited."

When fields are not in an excited energy state, they are in a state of lowest energy. This state is the only state in which there are no particles and is also known as the ground state.

However, this is a state of lowest energy, it's not a state of no energy. There is some amount of energy that the field always has, even when it is in the ground state. This energy is called the vacuum energy or "zero-point energy".

In short: A vacuum is not really empty; even if there are no particles, there are still fields. The vacuum energy is simply the energy that fields have when they are in the vacuum ("no particle") state.

https://www.quora.com/How-can-you-explain-zero-point-energy-to-a-non-physicist


As far as life is eternal, life in the universe could be, but I think you're talking about life and people's own consciousness and that may or may not be how it works, right now that doesn't seem to be the case and no science points to it being that way. If you have any that does that is science based, I would like to see it.
Click to expand...

When something is called a theory it is because it has not yet been proven.

"To the average person it might seem obvious that nothing can happen in nothing. But to a quantum physicist, nothing is, in fact something. " Brad Lemley[/QUOTE]
omega2xx said:
That doesn't answer my question: is matter, energy and life eternal?



As far as we know today.



That is still just a theory.



What is the Casimir effect?

How can you explain zero-point energy to a non-physicist?

"Now, when non-physicists think of a vacuum they usually think of "empty space", without any particles. However, the fields are always there, even when they're not excited to a higher energy state to create a particle. So a vacuum without any particles still has fields, they are simply not excited."

When fields are not in an excited energy state, they are in a state of lowest energy. This state is the only state in which there are no particles and is also known as the ground state.

However, this is a state of lowest energy, it's not a state of no energy. There is some amount of energy that the field always has, even when it is in the ground state. This energy is called the vacuum energy or "zero-point energy".

In short: A vacuum is not really empty; even if there are no particles, there are still fields. The vacuum energy is simply the energy that fields have when they are in the vacuum ("no particle") state.

https://www.quora.com/How-can-you-explain-zero-point-energy-to-a-non-physicist


As far as life is eternal, life in the universe could be, but I think you're talking about life and people's own consciousness and that may or may not be how it works, right now that doesn't seem to be the case and no science points to it being that way. If you have any that does that is science based, I would like to see it.
Click to expand...

When something is called a theory it is because it has not yet been proven.

"To the average person it might seem obvious that nothing can happen in nothing. But to a quantum physicist, nothing is, in fact something. " Brad Lemley[/QUOTE]
 
shawn001

shawn001

Well-Known Member
Two new fossils found

The first one is in an awesome state of preservation.
The Amazing Dinosaur Found (Accidentally) by Miners in Canada
Known as a nodosaur, this 110 million-year-old, armored plant-eater is the best-preserved fossil of its kind ever found.


This Is the Best Dinosaur Fossil of Its Kind Ever Found

The second

Paleobiologists make intriguing new discoveries about dinosaur ancestors

The Long-Ignored Reptile Rewriting the Prologue to the Dinosaur Story
After 84 years, scientists have finally unraveled the mystery of an early dino-cousin.

The Long-Ignored Reptile Rewriting the Prologue to the Dinosaur Story
 
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